Oxygen-rich hyper-cross-linked polymers with hierarchical porosity for aniline adsorption

Gan, Yangqi; Chen, Gui; Sang, Yafei; Zhou, Fa; Man, Ruilin; Huang, Jianhan

doi:10.1016/j.cej.2019.02.164

Cited by 88 publications

(33 citation statements)

References 45 publications

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“…As a type of PPM with excellent adsorption performance, polar-modied hyper-crosslinked polystyrene (PHPS) resins are widely used in adsorptive removal of organic pollutants from aqueous solution due to their adjustable porosity, high specic surface area and hydrophilicity. [30][31][32][33][34][35] There are three strategies for preparation of PHPS. The rst is to prepare polar initial styrene (St) co-polymers before post-cross-linking by adding polar monomers such as triallyl isocyanurate, methyl methacrylate, and N-vinyliminazole.…”

Section: Introductionmentioning

confidence: 99%

“…32,40 The third is to introduce phenolic hydroxyl groups through reaction of CMPS with phenols before postcross-linking with formaldehyde dimethyl acetal (FDA). 33,41 However, these strategies for preparing the PHPS resins have to use expensive cross-linkers or carcinogenic reagent chloromethyl methyl ether (CMME). Meanwhile, introduction of polar groups limits the post-cross-linking degree which might lower the specic surface area of the PHPS resins.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of hyper-cross-linked hydroxylated polystyrene for adsorptive removal of methylene blue

Liu

et al. 2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of hyper-cross-linked hydroxylated polystyrene for adsorptive removal of methylene blue

Liu

et al. 2021

RSC Adv.

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“…At present, treatment methods for aniline-containing wastewaters mainly include advanced oxidation [ 12 , 13 ], membrane separation [ 14 , 15 ], extraction [ 16 , 17 ], biological methods [ 18 ], and adsorption methods [ 19 , 20 , 21 , 22 ]. Among them, the adsorption method that uses the interactions between adsorbent and adsorbate to remove pollutants from wastewater has attracted the attention of researchers, because of its simple operation, fast processing, and resourceful recovery [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of PP-g-(AA-MAH) Fibers Using Suspension Grafting and Melt-Blown Spinning and its Adsorption for Aniline

Lian

Zuo

et al. 2020

Polymers

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This paper uses polypropylene (PP) as the matrix and acrylic acid (AA) and maleic anhydride (MAH) as functional monomers to prepare PP-g-(AA-MAH) fibers by suspension grafting and melt-blown spinning technology that are easy to industrially scale-up. The fibers can be used to adsorb aniline. Results showed that the grafting ratio reached the maximum of 12.47%. The corresponding optimal conditions were grafting time of 3 h, AA: MAH = 0.75, total monomer content of 55%, benzoyl peroxide 1.4%, xylene concentration of 6 mL/g PP, and deionized water content of 8 mL/g PP. Owing to its good fluidity and thermal stability, the product of suspension grafting can be used for melt-blown spinning. Infrared spectroscopic and nuclear magnetic resonance spectroscopic analyses indicated that AA and MAH were successfully grafted onto PP fibers. After grafting, the hydrophilicity of PP-g-(AA-MAH) fiber increased. Therefore, it had higher absorptivity for aniline and the adsorption capacity could reach 42.2 mg/g at 45 min and pH = 7. Moreover, the PP-g-(AA-MAH) fibers showed good regeneration performance.

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“…A hyper-crosslinked polymer (HCP) is an efficient adsorbent for the removal of anilines because of specific surface areas, porous structures, and surface physicochemical characteristics [ 10 , 11 , 12 ]. The Friedel–Crafts reaction has been used to synthesize HCPs by using low crosslinked chloromethylated polystyrene (CM-PS) as a starting skeleton in the presence of Lewis acids in solution.…”

Section: Introductionmentioning

confidence: 99%

“…Chemical modification has been considered to introduce different functional groups such as -OH, -NH 2 , and -COOH into the polymers, which can increase the adsorption capacity for poisonous organic chemicals. Therefore, HCPs modified with polar components have been studied during the past decades [ 11 , 12 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Immobilization of β-CD on a Hyper-Crosslinked Polymer for the Enhanced Removal of Amines from Aqueous Solutions

Yang

et al. 2020

Polymers

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In this paper, we adopted a simple and efficient strategy to prepare a β-cyclodextrin (β-CD)-modified hyper-crosslinked polymer (CDM-HCP). The structures and physicochemical properties of the as-synthesized polymer were also evaluated. It was applied to the removal of anilines from aqueous solutions. The introduction of β-CD into the hyper-crosslinked polymer significantly enhanced adsorption properties for the removal of various amines. The adsorption kinetics agreed with the pseudo-second-order mode very well. The adsorption isotherm data of p-methylaniline (p-MA) and p-aminobenzoic acid (p-ABC) were in agreement with the Langmuir isotherm, whereas aniline and p-chloroaniline (p-CA) were fitted best with the Freundlich model. The maximum adsorption capacities (qmax) determined by adsorption isotherms were 148.97 mg/g for aniline, 198.45 mg/g for p-MA, 293.71 mg/g for p-CA, and 622.91 mg/g for p-ABC, respectively. It had higher adsorption capacities than those of some commercial polymeric resins, such as XAD-4, PA66, and AB-8. The interaction mechanism was investigated by FTIR, XPS, and the ONIOM2 method. A CDM-HCP can be regenerated efficiently and used repeatedly, indicating its potential technological applications in removing organic pollutants from actual industrial effluents.

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Oxygen-rich hyper-cross-linked polymers with hierarchical porosity for aniline adsorption

Cited by 88 publications

References 45 publications

Preparation of hyper-cross-linked hydroxylated polystyrene for adsorptive removal of methylene blue

Preparation of hyper-cross-linked hydroxylated polystyrene for adsorptive removal of methylene blue

Preparation of PP-g-(AA-MAH) Fibers Using Suspension Grafting and Melt-Blown Spinning and its Adsorption for Aniline

Immobilization of β-CD on a Hyper-Crosslinked Polymer for the Enhanced Removal of Amines from Aqueous Solutions

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